CA2503527A1 - Biopsate holding device for a biopsy cannula - Google Patents
Biopsate holding device for a biopsy cannula Download PDFInfo
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- CA2503527A1 CA2503527A1 CA002503527A CA2503527A CA2503527A1 CA 2503527 A1 CA2503527 A1 CA 2503527A1 CA 002503527 A CA002503527 A CA 002503527A CA 2503527 A CA2503527 A CA 2503527A CA 2503527 A1 CA2503527 A1 CA 2503527A1
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- biopsy
- wire
- cannula
- holding device
- biopsy cannula
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- 238000001574 biopsy Methods 0.000 title claims abstract description 143
- 210000001519 tissue Anatomy 0.000 claims abstract description 42
- 210000001185 bone marrow Anatomy 0.000 claims abstract description 10
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 230000000717 retained effect Effects 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/025—Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/025—Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
- A61B2010/0258—Marrow samples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B2017/320064—Surgical cutting instruments with tissue or sample retaining means
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Rheumatology (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a biopsy holder for a biopsy cannula for carrying out transcutaneous biopsies of tissue, especially hard tissue and bone marrow tissue, using a wire which can be introduced into the proximal end of the biopsy cannula and which can be inserted between the inner wall of the biopsy cannula and the removing biopsy cylinder.
Description
Biopsate holding devicQ for a biopsy cannula The invention relates to a biopsate holding device for a biopsy cannula to perform transcutaneous biopsies, in particular of hard tissue and bone marrow tissue, by means of a biopsate holding device that can be inserted into the proximal end of a biopsy cannula and pushed in between the inner wall of the biopsy cannula and the to tissue-removing cylinder.
The state of the art can be described as follows:
Conventional needles for biopsic, transcutaneous removal of hard tissue, in particular bone marrow tissue, consist of a cylinder of different lengths and diameters, whose proximal end is fitted with a grip and whose distal end is tapered and narrows into a boring with a cutting edge. Ts the needle pressed into the tissue and simultaneously rotated around its axis it 2o cuts a cylindrical piece out of the tissue to be removed that is taken up in the hollow interior of the needle.
Withdrawal of the cylinder from the tissues as biopsy requires the subsequent interruption of the connection of the distal cylinder end with the remaining tissues into which the needle has been inserted. For this purpose, in conventional methods the grip of the needle is set into vibrations that run in a plane at a right angle to the needle axis with a trocar being provided at the point of insertion into the tissue. As a result of 3o this approach, the connections between the distal end of the biopsy and the remaining tissue are broken at the distal end of the needle that can be withdrawn and whose interior contains the biopsy material that is detained by the tapered end of the needle. This method of examination has the following disadvantages: Frequently the biopsy material is not retained in the needle since it is not completely loosened from the remaining tissue and since there is an, albeit low, negative pressure generated in the needle while it is being pulled out of the tissue so that the biopsy material is subsequently drawn in although this suction cannot overcome the to opposite brake effect that is caused by the tapering of the needle end. All this makes the repetition of the entire biopsy examination necessary. Frequently the explained difficulties while the needle is pulled out cause the biopsy material to slip out of the distal end of the needle which may result in an injury and a rupture of the biopsy cylinder during the withdrawal through the tissue and a loss of parts of the distal portion of the biopsy. The movements or vibrations that are exerted onto the needle in order to separate the biopsy often cause smaller fractures at the surface and interruptions in the coherence of the hard tissue into which the needle was inserted, with this possibility being increased with the distance from the tissue surface. The results are in for the patient and damaging of the needle that is prone to become bent and thus lose its necessary straightness.
Known is also a patent DE 43 05 226 "Device for needles for transcutaneous biopsies" that describes an accessory device for conventional biopsy needles for transcutaneous tissue biopsy, in particular hard tissue and bone marrow tissue. The accessory device permits the trouble-free performance of biopsies at any tissue, from hard, compact bones to very thin and brittle bone marrow tissue, without the danger that the biopsy needle is withdrawn without a tissue sample. The accessory device reduces the danger of damaging tissues during a biopsy and mitigates pain in patients. The basic principle of the accessory device is that an insertion structure is inserted at the proximal end of the biopsy needle and pushes itself between the inner wall of the needle and the tissue cylinder. The cylindrical configuration of the biopsy cannula makes sure that this structure is clamped together to retain the biopsate. The disadvantage of this technical solution lies in the fact that the clamping of the structure subjects the retained biopsate to a press fit. This press fit causes crush artefacts of the biopsate. The conclusion is that the crush artefacts may distort the results of the subsequent examination of the biopsate.
Basis of this invention is the problem of finding a biopsate holding device for a biopsy cannula to perform transcutaneous biopsies of tissue, in particular hard tissue and bone marrow tissue, and overcome the disadvantage of the state of the art and make sure that biopsate removal via the biopsy cannula becomes possible with very few crush artefacts and thus ensure the guaranteed biopsate removal via the biopsy cannula.
According to invention the problem is solved by realising a biopsate holding device for a biopsy cannula for the performance of transcutaneous biopsies of tissue, in particular hard tissue and bone marrow tissue, with patent claim 1 and its sub-claims being executed as the technical solution.
The biopsate holding device is executed in the form of a grip end and a wire attached to the grip end. The grip end can be arrested to the grip end of the biopsy cannula. The distal end of the wire is provided with a connection that makes sure that the wire is present at the distal end of the biopsy cannula at the inner wall to of the biopsy cannula and a biopsate cylinder. The wire with a pre-stress angle is arranged at the centre of the grip. end, with a pre-stress angle between 1° and 90°.
The wire and the provided tip with a bevelling should reasonably have a bevelling angle of 5° to 85°, preferably 20°. The wire with bevelling is executed so that the bevelling is directed towards the biopsate cylinder to be removed. The bevelling can also be executed as a hollow or bulged grind. What is essential is that the wire has a sufficient length for the removal of biopsate from the biopsy cannula. The wire extends to the end of the biopsy cannula.
This invention also provides a solution in which a shank is arranged at the grip end. The shank is inserted via the grip end into the biopsy cannula at the proximal end of the biopsy cannula. A wire with a defined pre-stress angle is fitted to the distal end of this shank. The shank for proximal insertion into the biopsy cannula has a grip end that can be arrested to the grip end of the biopsy cannula after insertion into the biopsy cannula.
The wire at the distal end of the shank is arranged in a fixed connection with a pre-stress angle between 1° and 90° to tolerate each application. The distal end of the wire has a tip with bevelling, with the bevelling also being executed according to the application from 5° to 85°, preferably 20°, and the bevelling being directed 5 towards the biopsy cylinder of the biopsate to be removed. The length of the shank and the pertaining wire is defined such that the wire length is preferably ca.
25 mm. The ratio of the dimensions must be kept in such a manner that the shank upon its insertion into the biopsy cannula of a known design has such a length that it ends directly at the end of the biopsy cannula between the inner wall of the biopsy cannula and the biopsate. Hence, it must be ensured that the biopsy cannula with its distal end forms a unit with the distal end of the shank wire. The wire that is fixed to the shank preferably has a roughened surface. The wire profile can be variably shaped. The cross-section of the wire is designed in such a manner that only minimal crush artefacts occur between the inner wall of the biopsy cannula and the interior biopsate cylinder when the shank is fixed in the biopsy cannula. The wire diameter is preferably ca. 0.35 mm.
The shank described therein with a wire at its distal end for insertion at the proximal end into a known biopsy cannula permits the trouble-free performance of a biopsy at any tissue, from hard, compacts bones to very thin and brittle bone marrow tissue, without the danger that the biopsy cannula is removed without a tissue sample. Arrangement of the shank with the wire at its distal end reduces the danger of damaging tissues during a biopsy and mitigates pain in patients. Finally, also the mechanical stress on the biopsy cannula is reduced since deflections are avoided which will extend the service life of the biopsy cannula. It is also ensured that biopsate is taken in a high quality since only minor crush artefacts occur between the inner wall of the biopsy cannula and the biopsate cylinder. Thus a highly reliable analysis of the biopsate is possible due to the low level of crush artefacts.
Further advantages and features of the invention are described in the claims and the following practical example in which a shank for a biopsy cannula according to invention is explained in detail with drawing references. The practical example is illustrated by the IS following figures:
Figure la: Shank with grip end Figure lb: Wire with grip end Figure 2: Biopsy needle Figure 3: Trocar Figure 4: Placing the biopsy needle in the biopsate Figure 5: Placing the shank in the biopsy needle Figure 6 and 7: Views of the biopsy needle and needle 3 with the described rotary motion Figure lb shows a device according to invention in which a grip end 20 is fitted with an arrestable grip end 22.
A wire 3 with a pre-stress angle 2 is attached at the centre of grip end 22. The length of the wire 3 is executed so that essentially the immediate end of the biopsy cannula 4 is reached. The pre-stress angle 2 ensures the gliding of the wire 3 along the inner wall of the biopsy cannula 4 between the biopsate cylinder 6.
The bevelling 5 of the wire 3 is executed so that the bevelling 5 is directed towards the biopsate cylinder 6 and thus an optimal displacement of the biopsate cylinder 6 is facilitated upon insertion of the wire 3 between the inner wall of the biopsy cannula 4 and the biopsate cylinder 6. Basically it can be assumed that the length of the wire will always correspond to the length of the respective biopsy cannula 4. Should the biopsy cannula 4 have a size that makes a correct insertion of the wire 3 via the grip end 22 no longer possible the following Figure la with an additionally mounted shank 1 is executed.
Figure la shows a shank 1 with a grip end 22 at its proximal end and a wire 3 with an appropriate pre-stress angle 2 at its distal end. The shank 1 is arranged so that it can be inserted conveniently into the biopsy cannula 4 as shown in Figure 2. It is important to mention that the grip 22 of the shank 1 is executed so that it can firmly arrested into the grip 20 of the biopsy cannula 4 after insertion of the shank 1. A wire 3 with a length of 25 mm is provided at the distal end of the shank 1. The wire 3 has a tip with a bevelling 5 with the angle of bevelling B being executed between 5°
and 85°, the bevelling B is preferably ca. 20° in the practical example. The bevelling 5 is arranged so that it is directed towards the biopsate cylinder 6 upon insertion of the shank 1 into the biopsy cannula 4 between the biopsate cylinder 6 and the inner wall of the biopsy cannula 4. The pre-stress angle 2 that defines the arrangement of the wire 3 is between 1° and 90°. In the preferred practical example the pre-stress angle 2 is ca. 10°. This pre-stress angle 2 is attained by the respective arrangement of the wire 3 at the distal end of the shank 1 by means of a specific mode of l0 attachment. The arrangement of the pre-stress angle 2 of the wire 3 causes at any rate a tension of the wire 3 upon insertion of the shank 1 into a biopsy cannula 4 as shown in Figure 2. The wire 3 of the shank 1 is pushed into the biopsy cannula 4 with this pre-tension when inserted at the outmost edge between the inner wall of the biopsy cannula 4 and the interior biopsate cylinder 6. Thus it is ensured that a very small number of biopsate artefacts occur when the biopsate is removed via the biopsy cannula 4.
Figures 2 and 3 show a known biopsy cannula 4 and a trocar 19 used for placing the biopsy cannula 4. The grip ends 21 of the trocar 19 and 22 of the shank 1 can be positioned and firmly arrested in the grip end 20 of the biopsy cannula 4. The biopsy cannula 4 in Figure 2 is placed via the trocar 19 in Figure 3 into the tissue to be removed.
The state of the art can be described as follows:
Conventional needles for biopsic, transcutaneous removal of hard tissue, in particular bone marrow tissue, consist of a cylinder of different lengths and diameters, whose proximal end is fitted with a grip and whose distal end is tapered and narrows into a boring with a cutting edge. Ts the needle pressed into the tissue and simultaneously rotated around its axis it 2o cuts a cylindrical piece out of the tissue to be removed that is taken up in the hollow interior of the needle.
Withdrawal of the cylinder from the tissues as biopsy requires the subsequent interruption of the connection of the distal cylinder end with the remaining tissues into which the needle has been inserted. For this purpose, in conventional methods the grip of the needle is set into vibrations that run in a plane at a right angle to the needle axis with a trocar being provided at the point of insertion into the tissue. As a result of 3o this approach, the connections between the distal end of the biopsy and the remaining tissue are broken at the distal end of the needle that can be withdrawn and whose interior contains the biopsy material that is detained by the tapered end of the needle. This method of examination has the following disadvantages: Frequently the biopsy material is not retained in the needle since it is not completely loosened from the remaining tissue and since there is an, albeit low, negative pressure generated in the needle while it is being pulled out of the tissue so that the biopsy material is subsequently drawn in although this suction cannot overcome the to opposite brake effect that is caused by the tapering of the needle end. All this makes the repetition of the entire biopsy examination necessary. Frequently the explained difficulties while the needle is pulled out cause the biopsy material to slip out of the distal end of the needle which may result in an injury and a rupture of the biopsy cylinder during the withdrawal through the tissue and a loss of parts of the distal portion of the biopsy. The movements or vibrations that are exerted onto the needle in order to separate the biopsy often cause smaller fractures at the surface and interruptions in the coherence of the hard tissue into which the needle was inserted, with this possibility being increased with the distance from the tissue surface. The results are in for the patient and damaging of the needle that is prone to become bent and thus lose its necessary straightness.
Known is also a patent DE 43 05 226 "Device for needles for transcutaneous biopsies" that describes an accessory device for conventional biopsy needles for transcutaneous tissue biopsy, in particular hard tissue and bone marrow tissue. The accessory device permits the trouble-free performance of biopsies at any tissue, from hard, compact bones to very thin and brittle bone marrow tissue, without the danger that the biopsy needle is withdrawn without a tissue sample. The accessory device reduces the danger of damaging tissues during a biopsy and mitigates pain in patients. The basic principle of the accessory device is that an insertion structure is inserted at the proximal end of the biopsy needle and pushes itself between the inner wall of the needle and the tissue cylinder. The cylindrical configuration of the biopsy cannula makes sure that this structure is clamped together to retain the biopsate. The disadvantage of this technical solution lies in the fact that the clamping of the structure subjects the retained biopsate to a press fit. This press fit causes crush artefacts of the biopsate. The conclusion is that the crush artefacts may distort the results of the subsequent examination of the biopsate.
Basis of this invention is the problem of finding a biopsate holding device for a biopsy cannula to perform transcutaneous biopsies of tissue, in particular hard tissue and bone marrow tissue, and overcome the disadvantage of the state of the art and make sure that biopsate removal via the biopsy cannula becomes possible with very few crush artefacts and thus ensure the guaranteed biopsate removal via the biopsy cannula.
According to invention the problem is solved by realising a biopsate holding device for a biopsy cannula for the performance of transcutaneous biopsies of tissue, in particular hard tissue and bone marrow tissue, with patent claim 1 and its sub-claims being executed as the technical solution.
The biopsate holding device is executed in the form of a grip end and a wire attached to the grip end. The grip end can be arrested to the grip end of the biopsy cannula. The distal end of the wire is provided with a connection that makes sure that the wire is present at the distal end of the biopsy cannula at the inner wall to of the biopsy cannula and a biopsate cylinder. The wire with a pre-stress angle is arranged at the centre of the grip. end, with a pre-stress angle between 1° and 90°.
The wire and the provided tip with a bevelling should reasonably have a bevelling angle of 5° to 85°, preferably 20°. The wire with bevelling is executed so that the bevelling is directed towards the biopsate cylinder to be removed. The bevelling can also be executed as a hollow or bulged grind. What is essential is that the wire has a sufficient length for the removal of biopsate from the biopsy cannula. The wire extends to the end of the biopsy cannula.
This invention also provides a solution in which a shank is arranged at the grip end. The shank is inserted via the grip end into the biopsy cannula at the proximal end of the biopsy cannula. A wire with a defined pre-stress angle is fitted to the distal end of this shank. The shank for proximal insertion into the biopsy cannula has a grip end that can be arrested to the grip end of the biopsy cannula after insertion into the biopsy cannula.
The wire at the distal end of the shank is arranged in a fixed connection with a pre-stress angle between 1° and 90° to tolerate each application. The distal end of the wire has a tip with bevelling, with the bevelling also being executed according to the application from 5° to 85°, preferably 20°, and the bevelling being directed 5 towards the biopsy cylinder of the biopsate to be removed. The length of the shank and the pertaining wire is defined such that the wire length is preferably ca.
25 mm. The ratio of the dimensions must be kept in such a manner that the shank upon its insertion into the biopsy cannula of a known design has such a length that it ends directly at the end of the biopsy cannula between the inner wall of the biopsy cannula and the biopsate. Hence, it must be ensured that the biopsy cannula with its distal end forms a unit with the distal end of the shank wire. The wire that is fixed to the shank preferably has a roughened surface. The wire profile can be variably shaped. The cross-section of the wire is designed in such a manner that only minimal crush artefacts occur between the inner wall of the biopsy cannula and the interior biopsate cylinder when the shank is fixed in the biopsy cannula. The wire diameter is preferably ca. 0.35 mm.
The shank described therein with a wire at its distal end for insertion at the proximal end into a known biopsy cannula permits the trouble-free performance of a biopsy at any tissue, from hard, compacts bones to very thin and brittle bone marrow tissue, without the danger that the biopsy cannula is removed without a tissue sample. Arrangement of the shank with the wire at its distal end reduces the danger of damaging tissues during a biopsy and mitigates pain in patients. Finally, also the mechanical stress on the biopsy cannula is reduced since deflections are avoided which will extend the service life of the biopsy cannula. It is also ensured that biopsate is taken in a high quality since only minor crush artefacts occur between the inner wall of the biopsy cannula and the biopsate cylinder. Thus a highly reliable analysis of the biopsate is possible due to the low level of crush artefacts.
Further advantages and features of the invention are described in the claims and the following practical example in which a shank for a biopsy cannula according to invention is explained in detail with drawing references. The practical example is illustrated by the IS following figures:
Figure la: Shank with grip end Figure lb: Wire with grip end Figure 2: Biopsy needle Figure 3: Trocar Figure 4: Placing the biopsy needle in the biopsate Figure 5: Placing the shank in the biopsy needle Figure 6 and 7: Views of the biopsy needle and needle 3 with the described rotary motion Figure lb shows a device according to invention in which a grip end 20 is fitted with an arrestable grip end 22.
A wire 3 with a pre-stress angle 2 is attached at the centre of grip end 22. The length of the wire 3 is executed so that essentially the immediate end of the biopsy cannula 4 is reached. The pre-stress angle 2 ensures the gliding of the wire 3 along the inner wall of the biopsy cannula 4 between the biopsate cylinder 6.
The bevelling 5 of the wire 3 is executed so that the bevelling 5 is directed towards the biopsate cylinder 6 and thus an optimal displacement of the biopsate cylinder 6 is facilitated upon insertion of the wire 3 between the inner wall of the biopsy cannula 4 and the biopsate cylinder 6. Basically it can be assumed that the length of the wire will always correspond to the length of the respective biopsy cannula 4. Should the biopsy cannula 4 have a size that makes a correct insertion of the wire 3 via the grip end 22 no longer possible the following Figure la with an additionally mounted shank 1 is executed.
Figure la shows a shank 1 with a grip end 22 at its proximal end and a wire 3 with an appropriate pre-stress angle 2 at its distal end. The shank 1 is arranged so that it can be inserted conveniently into the biopsy cannula 4 as shown in Figure 2. It is important to mention that the grip 22 of the shank 1 is executed so that it can firmly arrested into the grip 20 of the biopsy cannula 4 after insertion of the shank 1. A wire 3 with a length of 25 mm is provided at the distal end of the shank 1. The wire 3 has a tip with a bevelling 5 with the angle of bevelling B being executed between 5°
and 85°, the bevelling B is preferably ca. 20° in the practical example. The bevelling 5 is arranged so that it is directed towards the biopsate cylinder 6 upon insertion of the shank 1 into the biopsy cannula 4 between the biopsate cylinder 6 and the inner wall of the biopsy cannula 4. The pre-stress angle 2 that defines the arrangement of the wire 3 is between 1° and 90°. In the preferred practical example the pre-stress angle 2 is ca. 10°. This pre-stress angle 2 is attained by the respective arrangement of the wire 3 at the distal end of the shank 1 by means of a specific mode of l0 attachment. The arrangement of the pre-stress angle 2 of the wire 3 causes at any rate a tension of the wire 3 upon insertion of the shank 1 into a biopsy cannula 4 as shown in Figure 2. The wire 3 of the shank 1 is pushed into the biopsy cannula 4 with this pre-tension when inserted at the outmost edge between the inner wall of the biopsy cannula 4 and the interior biopsate cylinder 6. Thus it is ensured that a very small number of biopsate artefacts occur when the biopsate is removed via the biopsy cannula 4.
Figures 2 and 3 show a known biopsy cannula 4 and a trocar 19 used for placing the biopsy cannula 4. The grip ends 21 of the trocar 19 and 22 of the shank 1 can be positioned and firmly arrested in the grip end 20 of the biopsy cannula 4. The biopsy cannula 4 in Figure 2 is placed via the trocar 19 in Figure 3 into the tissue to be removed.
Placing of the biopsy cannula 4 in the described manner ensures that a cylindrical biopsate 6 is placed in the interior of the biopsy cannula 4 in the distal end of the biopsy cannula 4. This placing of the biopsy cannula 4 is depicted in Figure 4. After the biopsy cannula 4 has been placed into the tissue to be taken and the interior biopsy cylinder 6, the shank 1 is inserted proximally into the biopsy cannula 4 via the grip 22 with the wire 3 at its distal end.
Placing of the shank 1 with the wire 3 at its distal end is shown graphically in Figure 5 from setting the shank 1 to arresting the grip 22 of the shank 1 into the grip of the biopsy cannula 4. The given pre-stress angle 2 IS and the resulting tension of the wire 3 drive the wire 3 by insertion of the shank 1 into the biopsy cannula 4 directly immediately at the inner wall of the biopsy cannula 4 between the inner wall and the biopsate cylinder 6. The cylindrical design of the biopsy cannula 20 4 at the distal end provides for a guiding tension of the wire 3. The length of the shank 1 with the wire 3 at its distal end is chosen so that the tip 5 of the wire 3 ends directly at the distal end of the biopsy cannula 4 after insertion and arresting of the grip 22 of the shank 1 into the grip 20 of the biopsy cannula 4.
Figures 6 and Figure 7 show that the biopsy cannula 4 is subsequently handled such that a biopsate is shorn off by rotating the biopsy cannula 4. Following the rotation of the biopsy cannula 4 with the interior shank 1 the biopsy cannula is withdrawn from the tissue to be removed and the biopsate is taken out of an additional ejector after the shank 1 has been detached. A high 5 quality for the further examination of the biopsate is ensured by the very low level of crush artefacture of the biopsate between the inner wall of the biopsy cannula 4 and the wire 3 of the shank 1 as well as the interior biopsy cylinder 6. The essential advantage of 10 the shank 1 according to invention with the wire 3 at its distal end is that the penetration of the wire 3 of the shank 1 along the inner wall between the inner wall and the biopsate cylinder 6 generates a pressure which ensures that the biopsate cylinder 6 is retained at the distal end of the biopsy cannula 4 after rotation of the biopsy cannula 4 and thus provides a high guarantee that a biopsate is contained upon removal of the biopsy cannula 4.
Placing of the shank 1 with the wire 3 at its distal end is shown graphically in Figure 5 from setting the shank 1 to arresting the grip 22 of the shank 1 into the grip of the biopsy cannula 4. The given pre-stress angle 2 IS and the resulting tension of the wire 3 drive the wire 3 by insertion of the shank 1 into the biopsy cannula 4 directly immediately at the inner wall of the biopsy cannula 4 between the inner wall and the biopsate cylinder 6. The cylindrical design of the biopsy cannula 20 4 at the distal end provides for a guiding tension of the wire 3. The length of the shank 1 with the wire 3 at its distal end is chosen so that the tip 5 of the wire 3 ends directly at the distal end of the biopsy cannula 4 after insertion and arresting of the grip 22 of the shank 1 into the grip 20 of the biopsy cannula 4.
Figures 6 and Figure 7 show that the biopsy cannula 4 is subsequently handled such that a biopsate is shorn off by rotating the biopsy cannula 4. Following the rotation of the biopsy cannula 4 with the interior shank 1 the biopsy cannula is withdrawn from the tissue to be removed and the biopsate is taken out of an additional ejector after the shank 1 has been detached. A high 5 quality for the further examination of the biopsate is ensured by the very low level of crush artefacture of the biopsate between the inner wall of the biopsy cannula 4 and the wire 3 of the shank 1 as well as the interior biopsy cylinder 6. The essential advantage of 10 the shank 1 according to invention with the wire 3 at its distal end is that the penetration of the wire 3 of the shank 1 along the inner wall between the inner wall and the biopsate cylinder 6 generates a pressure which ensures that the biopsate cylinder 6 is retained at the distal end of the biopsy cannula 4 after rotation of the biopsy cannula 4 and thus provides a high guarantee that a biopsate is contained upon removal of the biopsy cannula 4.
Reference characters l0 1 Shank 2 Pre-stress angle 3 Wire 4 Biopsy cannula 5 Tip with a bevelling 6 Biopsate cylinder 7 Bone marrow 8 Tapering 9 Cutting edge of the cannula IO Proximal connection surface 19 Trocar 20 Grip end 21 Grip end 22 Grip end of shank 1 B Bevelling angle
Claims (12)
1. A biopsy material holding device for a biopsy cannula (4) to perform transcutaneous biopsies of tissue, in particular hard tissue and bone marrow tissue by means of a biopsy material holding device that can be inserted into the proximal end of a biopsy cannula (4) and is inserted between the inner wall of a biopsy cannula (4) and the tissue-removing cylinder, characterised in that a wire (3) with a bevelling (5) is arranged at the distal end of the wire (3) at a biopsy material holding device and the wire (3) having a Pre-stress angle (2).
2. A biopsy material holding device for a biopsy cannula (4) according to claim 1 characterised in that the biopsy material holding device is made of a wire (3) attached to a grip end (22).
3. A biopsy material holding device for a biopsy cannula (4) according to claim 1 characterised in that that the biopsy material holding device is composed of a grip end (22) with an attached extension shank (1) and that a wire (3) is fastened to the shank (1).
4. A biopsy material holding device for a biopsy cannula (4) according to claim 1 characterised in that the wire (3) has a tip with a bevelling (5) and the tip with bevelling (5) has a bevelling angle B of 5° to 85°, preferably 20°, and is facing the biopsy material cylinder (6).
5. A biopsy material holding device for a biopsy cannula (4) according to claims 1 and 4 characterised in that the bevelling (5) of the wire (3) is either hollow ground or bulged.
6. A biopsy material holding device for a biopsy cannula (4) according to claim 1 characterised in that the wire (3) with a pre-stress angle (2) is arranged at the centre of the grip end (22), with the pre-stress angle (2) being between 1° and 90°.
7. A biopsy material holding device for a biopsy cannula (4) according to claim 1 characterised in that the wire (3) has a length that corresponds to that of the biopsy cannula (4) at ends at the latter's ending.
8. A biopsy material holding device for a biopsy cannula (4) according to claim 1 characterised in that the grip end (22) can be locked into the grip end (20) of the biopsy cannula (4).
9. A biopsy material holding device for a biopsy cannula (4) according to claim 3 characterised in that the wire (3) is firmly connected to the distal end of the shank (1) and a pre-stress angle (2) between 1° and 90° is provided, according to the specific application.
10. A biopsy material holding device for a biopsy cannula (4) according to claim 3 characterised in that the length of the wire (3) is preferably 25 mm and ends at the direct end of a known biopsy cannula (4) after insertion of the shank (1) and locking of the grip end (22) into the grip (20) of the biopsy cannula (4).
11. A biopsy material holding device for a biopsy cannula (4) according to claim 1 characterised in that the wire (3) has a roughened surface and is shaped in an optional profile with the cross-section of the wire (3) being dimensioned in such a manner that fastening of the wire (3) at the distal end of the biopsy cannula (4) conditions a minimal pinch artefacture with a diameter of preferably ca. 0.35 mm.
12. A biopsy material holding device for a biopsy cannula (4) according to claim 3 characterised in that the wire (3) is arranged without a pre-stress angle (2) at the side of the shank (1) and thus fits closely to the interior wall of the biopsy cannula (4).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10250071.1 | 2002-10-25 | ||
| DE10250071A DE10250071A1 (en) | 2002-10-25 | 2002-10-25 | Biopsy device for a biopsy cannula |
| EP03011430.0 | 2003-05-20 | ||
| EP03011430A EP1413253B1 (en) | 2002-10-25 | 2003-05-20 | Sample holding device for a biospy cannula |
| PCT/EP2003/011727 WO2004037093A1 (en) | 2002-10-25 | 2003-10-23 | Biopsy holder for a biopsy cannula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2503527A1 true CA2503527A1 (en) | 2004-05-06 |
Family
ID=32178285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002503527A Abandoned CA2503527A1 (en) | 2002-10-25 | 2003-10-23 | Biopsate holding device for a biopsy cannula |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7662108B2 (en) |
| JP (1) | JP4143642B2 (en) |
| AU (1) | AU2003298096B2 (en) |
| CA (1) | CA2503527A1 (en) |
| RU (1) | RU2303402C2 (en) |
| SI (1) | SI1413253T1 (en) |
| WO (1) | WO2004037093A1 (en) |
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| US7546089B2 (en) * | 2004-12-23 | 2009-06-09 | Triquint Semiconductor, Inc. | Switchable directional coupler for use with RF devices |
| CN102100568A (en) * | 2005-03-29 | 2011-06-22 | Hi-Lex株式会社 | Double needle for medical treatment, bone centesis needle, and bone marrow sampling device |
| US20060276747A1 (en) | 2005-06-06 | 2006-12-07 | Sherwood Services Ag | Needle assembly with removable depth stop |
| US7731692B2 (en) | 2005-07-11 | 2010-06-08 | Covidien Ag | Device for shielding a sharp tip of a cannula and method of using the same |
| US7654735B2 (en) | 2005-11-03 | 2010-02-02 | Covidien Ag | Electronic thermometer |
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| US8721702B2 (en) | 2010-11-15 | 2014-05-13 | Aquesys, Inc. | Intraocular shunt deployment devices |
| JP5396272B2 (en) * | 2006-06-30 | 2014-01-22 | アクエシス インコーポレイテッド | Method, system and apparatus for reducing pressure in an organ |
| US20120123316A1 (en) | 2010-11-15 | 2012-05-17 | Aquesys, Inc. | Intraocular shunts for placement in the intra-tenon's space |
| US8828070B2 (en) | 2010-11-15 | 2014-09-09 | Aquesys, Inc. | Devices for deploying intraocular shunts |
| US20120123317A1 (en) * | 2010-11-15 | 2012-05-17 | Aquesys, Inc. | Methods for implanation of glaucoma shunts |
| US8852256B2 (en) | 2010-11-15 | 2014-10-07 | Aquesys, Inc. | Methods for intraocular shunt placement |
| US8801766B2 (en) | 2010-11-15 | 2014-08-12 | Aquesys, Inc. | Devices for deploying intraocular shunts |
| US9095411B2 (en) | 2010-11-15 | 2015-08-04 | Aquesys, Inc. | Devices for deploying intraocular shunts |
| US8663303B2 (en) | 2010-11-15 | 2014-03-04 | Aquesys, Inc. | Methods for deploying an intraocular shunt from a deployment device and into an eye |
| US8357104B2 (en) * | 2007-11-01 | 2013-01-22 | Coviden Lp | Active stylet safety shield |
| JP5739817B2 (en) | 2008-11-19 | 2015-06-24 | コーニンクレッカ フィリップス エヌ ヴェ | Needle with optical fiber |
| ES2602505T3 (en) * | 2010-04-27 | 2017-02-21 | Apriomed Ab | Biopsy Extraction Unit |
| IT1401050B1 (en) * | 2010-07-23 | 2013-07-12 | Biopsybell S R L | NEEDLE FOR BIOPSY OSTEOMIDOLLAR ANTI LUSSAZIONE |
| US20160256319A1 (en) | 2010-11-15 | 2016-09-08 | Aquesys, Inc. | Intraocular shunt placement in the suprachoroidal space |
| US9808373B2 (en) | 2013-06-28 | 2017-11-07 | Aquesys, Inc. | Intraocular shunt implantation |
| US9610195B2 (en) | 2013-02-27 | 2017-04-04 | Aquesys, Inc. | Intraocular shunt implantation methods and devices |
| US8852136B2 (en) | 2011-12-08 | 2014-10-07 | Aquesys, Inc. | Methods for placing a shunt into the intra-scleral space |
| US10080682B2 (en) | 2011-12-08 | 2018-09-25 | Aquesys, Inc. | Intrascleral shunt placement |
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| AU2014348536B2 (en) | 2013-11-14 | 2017-01-12 | Aquesys, Inc. | Intraocular shunt inserter |
| US9925068B2 (en) | 2014-05-30 | 2018-03-27 | Treace Medical Concepts, Inc. | Bone harvester and bone marrow removal system and method |
| CN107835678B (en) | 2015-06-03 | 2021-03-09 | 阿奎西斯公司 | Ex-ocular shunt placement |
| WO2017210627A1 (en) | 2016-06-02 | 2017-12-07 | Aquesys, Inc. | Intraocular drug delivery |
| US11246753B2 (en) | 2017-11-08 | 2022-02-15 | Aquesys, Inc. | Manually adjustable intraocular flow regulation |
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| US4926877A (en) * | 1989-04-24 | 1990-05-22 | Bookwalter John R | Biopsy needle with completely closable cutting end bore |
| US5462062A (en) * | 1991-12-13 | 1995-10-31 | Rubinstein; Daniel B. | Bone marrow biopsy needle with cutting and/or retaining device at distal end |
| FR2687303B1 (en) | 1992-02-19 | 1998-12-04 | Vito Lelio Burgio | ADDITIONAL DEVICE FOR ORDINARY NEEDLES FOR TRANSCUTANEOUS BIOPSY OF COMPACT TISSUES, ESPECIALLY OSTEO-MEDULAR TISSUE. |
| US5257632A (en) * | 1992-09-09 | 1993-11-02 | Symbiosis Corporation | Coaxial bone marrow biopsy coring and aspirating needle assembly and method of use thereof |
| IT1290628B1 (en) * | 1997-01-03 | 1998-12-10 | Gallini Srl | DEVICE FOR THE EXECUTION OF BIOPSIES |
| US6080115A (en) * | 1999-02-24 | 2000-06-27 | Rubinstein; Alan I. | Bone marrow biopsy needle |
| EP1078602A3 (en) * | 1999-08-26 | 2001-04-04 | Mani, Inc. | Suturing needle for medical use |
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| US6443910B1 (en) * | 2000-04-18 | 2002-09-03 | Allegiance Corporation | Bone marrow biopsy needle |
| IT1317102B1 (en) * | 2000-07-24 | 2003-05-26 | Pietro Castellacci | NEEDLE OF THE BIOPSY TYPE OR FOR OTHER WITHDRAWALS FROM HUMAN OR DIANIMAL ORGANS. |
-
2003
- 2003-05-20 SI SI200330043T patent/SI1413253T1/en unknown
- 2003-10-23 CA CA002503527A patent/CA2503527A1/en not_active Abandoned
- 2003-10-23 JP JP2005501533A patent/JP4143642B2/en not_active Expired - Fee Related
- 2003-10-23 WO PCT/EP2003/011727 patent/WO2004037093A1/en active IP Right Grant
- 2003-10-23 AU AU2003298096A patent/AU2003298096B2/en not_active Ceased
- 2003-10-23 RU RU2005115962/14A patent/RU2303402C2/en not_active IP Right Cessation
- 2003-10-23 US US10/532,518 patent/US7662108B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004037093A1 (en) | 2004-05-06 |
| AU2003298096B2 (en) | 2007-03-22 |
| US20060052721A1 (en) | 2006-03-09 |
| RU2005115962A (en) | 2005-11-20 |
| SI1413253T1 (en) | 2006-02-28 |
| AU2003298096A1 (en) | 2004-05-13 |
| US7662108B2 (en) | 2010-02-16 |
| JP2006503680A (en) | 2006-02-02 |
| JP4143642B2 (en) | 2008-09-03 |
| RU2303402C2 (en) | 2007-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20100907 |